Which type of protein transmits information into the cell by other molecules attaching to it

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

Where can a dna be found in a prokaryotic cell

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes